Coal-jig.



2 SHEETS-SHEET I.

Patented July 25, 1916.

. J. GASPER.

coAL HG.

Gaye?" 29 J, l @M @mgm APPLICATION FILED MAR. 25| I9l6.

OOOO OOO O M. 1. GASPER. COAL JIG.

I APPLICATION FILED MAR. 25.19l6. 1,1 92,296. Patented July 25, 1916.

2 SHEETS-SHEET 2.

30 i 35 30 3/ im 4 gli( e? f mmms Fergus co..Pnam-uma..wnsm-amu; n cv`ivironnEL J. GASPEE, 0E lnoiizLEToit, PENNSYLVANIA.

COAL-(TIG.

Specification of Letters Patent.

VPatented July 25, 1916.

Application mea Marchas, 191e. serial No. 86,635.

following isa specification.

This lnventionrelates to that class of devices which are generally knownas coal jigs or jiggers and" in which separation lof the relativelylight coal from the relatively heavy refuse, such as rock and slate, iseffected by the actionof water which` is caused to pulsate through `aninclined screen over which the mixture of coal and refuse as it comesfrom the mine isguided.

The invention has for its object `to produce a device of simpleandimproved construction having a gate, known as the slate gate7 throughwhich the heavy refuse is discharged, and means for automaticallyactuating said gate when a sufficient quantity of refuse material isaccumulated.

A further object of the invention is to simplify and improve'the generalconstruction and arrangement of the parts constitutlng the improveddevice.

With theseand other ends in view which will readily appear as the natureofthe invention is better understood, the same consists in the improvedconstruction and novel arrangement and combination of parts which willbe hereinafter fully described and particularlypointed out in theclaims.

In the accompanying drawings has been illustrated a simple` andypreferred form of the invention, it being, however, understood that nolimitation is necessarily made to the 1 precise structural detailstherein exhibited,

but that changes, alterations and modifications within the scope of theclaimsr may be resorted to whendesired. i i

In the drawings, -Figure lis al side elevation of a coaljiggerconstructed in accordance with the invention, parts having been brokenaway. Fig. 2 is atopplan view with parts broken" away. Fig. 3 is a frontelevation with parts broken away. F ig. 11 is a detail view, partly insection and partly in elevation, showing th porting the rock shaftcarrying `the gate actuating arms and the counterweight arms. Fig. 5 isa detail view, partly in section and partly in elevation, showing aportion of the e manner of supplunger stem and the means on saidstem forengaging the arm ofthe rock shaft..

` orresponding parts in theseveral gures are denoted by like charactersof reference.

The tank 15 supports the inclined grate or screen-16 through which wateris caused to pulsate by well known means, not shown. At the. dischargeend of the tank is the wall member `17` at the ylower end of which theslate gatelS is supported permitting said gate to swing outwardly fromthe tank. The coal receiving chute 2O is connected with the upper edgeof the member 17` where the coal overflows; the

slate chute 21 is supported to receive the refuse coming over the grateor screen 16 when the gate 18 irs-open. f

The upper portion of the tank is provided with bearings or brackets 22through which are threaded screws 23 that serve to support the rockshaft 24, said rock shaft and screws having interengaging conical points25 and sockets 26 that will permit said rock shaft to operate freely,wear on the bearings being compensated for by `proper adjustment of thesaid screws 23. The rock shaft 24" has radial arms 27 that are connectedby link bars 28 with the gate 18. The rock shaft 8-1 is also providedwith arms 29 carrying coimterweights 30 that tend to maintain the gate18 in aclosed position. The weights 30 are adjustably mounted on thearms 29 by set screws 31.

A cross bar 32 extending across the top of the tank supports adownwardlyextending cylinder '33 'which is made of screen material, suchas Woven wire, perforated sheet metal or the like, said screen cylinderserving as a guide for a vertically movable plunger 34: which islikewise made of screen maf terial and of cylindrical shape. Thecylindrical guide member 83 is cut away at its lower portion to producea curved or inclined recess 35 facing the wall member 17 of the tank.The cut-awayportion or recess 35 will facilitate theescape of slate,rock and other obstructions `when the slate gateis thrown open and willprevent such material from becoming entangled with the cylindrical guidemember. y The plunger 34C has an upwardly extending rod or stem 36 whichis guided through aftube '37 mounted and supported on the cross bar 32,and said stem by a hinge 19,

carries a collar collar serving by contact with the upper endv 38 thatmay be secured in position at various adjustments by a set screw 39,said of the guide tube B7 to limit lthe downward movement of theplunger. The set screw 39, in addition to securing neath an arm l0extending radially from the rock shaft 24:, said rock shaft being thusrocked against the tension exerted by the counterweights 30 when theplunger 3a and the stem 36 move in an upward direction.

In the operation of this device the coal and refuse coming from the mineis guided over the inclined screen 16 in the direction of the slate gate18.l By pulsation of water through the screen tivelyv light is carriedupward and is permitted to escape over the top edge of the wall member17, being received in the chute 20. When a predetermined quantity ofrefuse, such as slate and rocks, has accumulated in the lower portion ofthe tankv adjacent to the slate gate, pressure will be exerted upwardlyagainst the plunger 34, causing the latter to rise and to actuate therock shaft whereby the slate gate is thrown open, permitting theaccumulated slate and rock to pass into the chute 21. As soon as thepressure against the slate gate is relieved, the latter will be restoredtc its closed position by the action of the counterweights 30, theplunger 34: settling to its initial position in the lower end of thecylindrical screen 33 which constitutes a guide for the plunger. Theguide cylinder 88, as well as the plunger 345, being made of screenmaterial, neither one nor the other of said members will obstruct thepulsation of the water, and the operation of the device is, therefore,facilitated and improved.

Having thus described. the invention, what is claimed as new, is

1. 1n a device of the class described, a jig tank having an inclinedscreen bottom and a slate gate hingedly supported above the low end ofsaid screen bottom with its free edge adjacent thereto, means includinga rock shaft having radial arms, and connecting ylinks or bars forcontrollingI the movement of the gate, and means including a verticallymovable floating. plunger for actuating the rock shaft, said plungerhaving a predetermined limited movement independthe rock shaft. deviceof the class described, a jig ently of its connection with 2. In a vtank having an inclined screen bottom and a slate gate hingedlysupported above the low end of said screen bottom with its free edgeadjacent thereto, means including a rock shaft having radial arms, andconnecting links or bars for controlling the movement of the gate, andmeans including a vertically movable floating plunger for actuating therock shaft, said plunger having a prethe collar 38, is n utilized as anengaging member to engage bethe coal being relaof its connection withthe rock shaft, said rock shaft having radially extending weightcarrying armsto balance the weight of the slate gate.

i 3. In a device of the class described, a jig tank having a slate gate,actuating means for said gate including a rock shaft and suitableconnections, adjustable counterweights 1 connected .with the rock shaftto maintain the slate gate normally in closed position, and gateactuating means including an r`arm extending from the rock shaft, aplunger guided for vertical movement in the tank and having an upwardlyextending stem, and engaging means on said stem for the radial arm oftherock shaft, and a guide for said plunger having its lower end reduced toform an inclined recess.

d. In a device of the class described, a jig tank having a front wallover which coal may. flow, and a slate gate hinged at the lower edge ofsaid wall, operating means for closing the gate including a rock shaft,connections between said shaft yand the gate, and counterweight carryingarms extending from the rock shaft, and operating means for opening thegate including a vertically movable plunger, an arm extending from therock shaft, a plunger stem, and arm engaging means adjustably mounted onsaid stem whereby the plunger and the plunger stein may have apredetermined limited movement with respect to' the arm extending fromthe rock shaft.

icc

5. In a device of the class described, a jig tankhaving a front/wallover which coal may flow, and a vslate gate hinged at the lower edge ofsaid wall, operating means for closing the gate including a rock shaft,connections between said shaft and the gate, and

vided at its lower end with a reduced portion forming a recess facingthe' wall with which the slate gate is connected.

6. 1n a device of the class described, a jig tank having a front wallover which coal may ow, and a slate gate hinged at the lower edge ofsaid wall, operating means for closing the gate including a rock shaft,connections between said shaft and the gate, and counterweight carryingarms extending from the rockshaft, and operating means for opening thegate including a vertically movable plunger, anvarm extending from therock shaft, a plunger stem, .and arm engaging means on said stem; andguide means for the plunger consisting of a screen cylinder supportedwithin the tank and having a reduced lower portion forming. a recessfacing the slate gate.

7. In a device of the class described, a jig tank having a slate gate,actuating means for said gate including a rock shaft and suitableconnections, adjustable counterweights connected with the rock shaft tomaintain the slate gate normally in closed position, and gate actuatingmeans including an armextending from the rock shaft, a plunger of screenmaterial guided for vertical movement in the tank and having an upwardlyextending stem, and engaging means on said stem for the radial arm ofthe rock shaft.

8. In a device of the class described, a jig tank having a slate gate,actuating means for said gate including a rock shaft and suitableconnections, adjustable counterweights connected with the rock shaft tomaintain the slate gate normally in closed position, and gate actuatingmeans including an arm extending from the rock shaft, a plunger ofscreen material guided for vertical movement in the tank and having anupwardly extending stem, and engaging means on said stem for the radialarm of the rock shaft; the guiding means for the plunger being composedof a cylindrical member of screen material having its lower end cut oiobliquely to form a recess facing the slate gate.

In testimony whereof I aizo my signature in presence of two witnesses.

MICHAEL J. GASPER.

Witnesses:

JOHN J. KELLEY, JOHN KEMP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

